CN111137127A - Built-in integrated assembly for metal fuel tank and metal fuel tank - Google Patents
Built-in integrated assembly for metal fuel tank and metal fuel tank Download PDFInfo
- Publication number
- CN111137127A CN111137127A CN202010188201.4A CN202010188201A CN111137127A CN 111137127 A CN111137127 A CN 111137127A CN 202010188201 A CN202010188201 A CN 202010188201A CN 111137127 A CN111137127 A CN 111137127A
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- Prior art keywords
- fuel tank
- metal fuel
- integrated
- platform
- supporting plate
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K15/00—Arrangement in connection with fuel supply of combustion engines or other fuel consuming energy converters, e.g. fuel cells; Mounting or construction of fuel tanks
- B60K15/03—Fuel tanks
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K15/00—Arrangement in connection with fuel supply of combustion engines or other fuel consuming energy converters, e.g. fuel cells; Mounting or construction of fuel tanks
- B60K15/03—Fuel tanks
- B60K15/077—Fuel tanks with means modifying or controlling distribution or motion of fuel, e.g. to prevent noise, surge, splash or fuel starvation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K15/00—Arrangement in connection with fuel supply of combustion engines or other fuel consuming energy converters, e.g. fuel cells; Mounting or construction of fuel tanks
- B60K15/03—Fuel tanks
- B60K2015/03256—Fuel tanks characterised by special valves, the mounting thereof
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K15/00—Arrangement in connection with fuel supply of combustion engines or other fuel consuming energy converters, e.g. fuel cells; Mounting or construction of fuel tanks
- B60K15/03—Fuel tanks
- B60K15/077—Fuel tanks with means modifying or controlling distribution or motion of fuel, e.g. to prevent noise, surge, splash or fuel starvation
- B60K2015/0775—Fuel tanks with means modifying or controlling distribution or motion of fuel, e.g. to prevent noise, surge, splash or fuel starvation for reducing movement or slash noise of fuel
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
Abstract
The invention discloses a built-in integrated component for a metal fuel tank and the metal fuel tank, comprising: the integrated component is of a thin plate structure, the thin plate structure comprises three parts, namely a connecting platform, a supporting plate and an inserting platform, the connecting platform is used for being connected with a shell of the metal fuel tank, a support is arranged on the supporting plate and used for connecting a valve, inserting holes are arranged in the supporting plate and used for connecting pipe clamps of a fixed pipeline, an inserting structure is arranged on the inserting platform and used for inserting a plurality of integrated components, and the metal fuel tank is internally provided with the integrated component. The technical scheme reduces the number of parts in the production process of the metal fuel tank, the production technological process and the tool clamp, and strengthens the strength of the metal fuel tank.
Description
Technical Field
The invention relates to a metal fuel tank, in particular to a built-in integrated component for the metal fuel tank and the metal fuel tank.
Background
In order to reduce the permeation discharge amount of substances such as hydrocarbon and the like, punching holes on a metal fuel tank body are reduced, and parts are embedded in the tank body to be applied more and more.
The metal fuel tank needs to be provided with parts such as a valve, a pipeline, a pipe clamp and the like to realize functions of fuel storage, fuel sending, fuel vapor control and the like, the parts need to be fixed inside the metal fuel tank respectively, and materials, shapes and weights of the parts are different, so that the connection modes of each part and the metal fuel tank are different, different types of fixing structures need to be connected on the metal fuel tank in advance, the production process of the metal fuel tank needs multiple tool fixtures, and the production efficiency is low.
The main technical problem who focuses on solving how to connect different parts alone in this technical field at present, for example the chinese utility model patent of publication number CN207583539U discloses "a built-in discharge valve mounting structure for metal oil tank", and it uses the panel beating leg joint that has the bolt inside the box, then uses the nut connecting valve. For example, chinese utility model patent with publication No. CN209320701U discloses a "breakwater for metal oil tank", in which a fixed block with a fixed groove is disposed on the inner wall of the oil tank, the breakwater is inserted into the fixed groove, and the breakwater is in interference fit with the fixed groove.
The defects of the above methods are that only the built-in connection or fixation of a single part is realized, and the structure and the process for connecting or fixing each part and the metal fuel tank are different, so that the number of parts involved in the production process of the metal fuel tank is large, the number of working procedures is large, the number of tool fixtures is large, and the time consumption of the process is long.
Under the industrial trend of energy conservation and emission reduction, plug-in type or extended range type hybrid vehicles come along, and the use of a sealed fuel tank becomes one of the technical schemes of the hybrid vehicles, but because of the change of the environmental temperature and the volatilization characteristic of the fuel, the pressure change in a larger range is generated in the sealed fuel tank, and the difficulty of strengthening the strength of the fuel tank and reducing the deformation under the pressure becomes the technical problem to be solved in the technical field.
Disclosure of Invention
The invention aims to solve the technical problems and overcome the problems in the prior art, and provides a built-in integrated component for a metal fuel tank and the metal fuel tank.
The technical scheme also particularly realizes the functions of clamping and positioning the breakwater and the tool and lifting the metal fuel tank to bear the internal and external pressure, is favorable for reducing the fuel shaking noise, improves the precision of the built-in position of the part and reduces the deformation amount of the metal fuel tank under the pressure.
In order to achieve the above object, the present invention provides a built-in integrated module for a metal fuel tank and a metal fuel tank including:
the integrated component is of a thin plate structure, the thin plate structure comprises three parts, namely a connecting platform, a supporting plate and an inserting platform, the connecting platform is used for being connected with a shell of the metal fuel tank, a support is arranged on the supporting plate and used for connecting a valve, inserting holes are arranged in the supporting plate and used for assembling a pipe clamp fixing pipeline, an inserting structure is arranged on the inserting platform and used for inserting the integrated components mutually, the integrated components are connected with required built-in parts in advance, and then the integrated component is integrally connected in the metal fuel tank.
As a preferable aspect of the present invention: the connecting platforms are arranged in multiple directions of the integrated assembly, so that the integrated assembly and the upper shell or the lower shell of the metal fuel tank are connected and fixed in at least more than two directions, and the integrated assembly is reliably fixed in the metal fuel tank.
As a preferable aspect of the present invention: the tail end of the connecting platform is designed into a semicircular shape or an arc shape with a certain distance, so that the connection point of the connecting platform and the metal fuel tank can be positioned.
As a preferable aspect of the present invention: the connecting platform and the supporting plate are made of the same material and can be integrally formed.
As a preferable aspect of the present invention: the support that the backup pad was arranged is provided with the logical groove structure parallel with the horizontal plane, realizes being applicable to current valve connection structure and with the valve level fixed.
As a preferable aspect of the present invention: the jacks arranged in the supporting plate have different apertures, so that the supporting plate is suitable for assembling pipe clamps for fixing different pipelines, or the jacks are arranged in non-fully-closed holes at the edge of the supporting plate, the internal dimension of the jacks is matched with the diameter of the pipeline, and the direct assembly connection of the pipeline is realized.
As a preferable aspect of the present invention: the locating hole of elliptical hole is arranged to the backup pad, can constitute location structure with corresponding round hole for frock presss from both sides tight location.
As a preferable aspect of the present invention: the through holes are arranged in the supporting plate, so that impact energy when fuel shakes can be buffered, fuel shaking noise is reduced, the function of the wave-proof plate is achieved, and meanwhile the weight of the supporting plate is reduced.
As a preferable aspect of the present invention: annular reinforcing ribs are arranged on the supporting plate, so that the rigidity of the integrated assembly is increased, and the deformation resistance of the metal fuel tank is improved.
As a preferable aspect of the present invention: the slots are arranged in the supporting plate and can be combined with the inserting platform of another integrated component in an intersecting mode, the inserting of more than two integrated components is achieved, the center distance between the integrated components is shortened, and the drawing force of the inserting structure is improved.
As a preferable aspect of the present invention: the plug-in platform and the supporting plate are made of the same material and can be integrally formed
As a preferable aspect of the present invention: the plug-in structure arranged on the plug-in platform is a stamping hole flanging, and materials in the hole can be turned into a side-standing flange in one step or fewer steps to realize a reliable plug-in structure.
As a preferable aspect of the present invention: the splicing platform is parallel to the horizontal plane, when the upper shell and the lower shell are respectively connected with the integrated components which can be spliced with each other, the upper shell and the lower shell are connected up and down in the cavity, the capacity of the metal fuel tank cavity for bearing internal and external pressure is improved, and the stress deformation quantity of the cavity part is reduced.
The invention also provides a metal fuel tank, wherein the integrated component provided by the invention is arranged in the metal fuel tank, and the built-in component connecting platform is connected with the inner wall of the metal fuel tank in a welding manner.
Compared with the prior art, the invention has the following beneficial effects:
1) according to the technical scheme, the parts arranged in the metal fuel tank are connected into a whole in advance by the integrated assembly, the integrated assembly is arranged in the metal fuel tank in a single connection mode, the number of the parts related to the production process of the metal fuel tank is reduced, the production process and the tool clamp of the metal fuel tank are reduced, the production efficiency is improved, and the production cost is reduced.
2) The technical scheme provides a universally applicable connecting structure of built-in parts of the metal fuel tank, and the integrated assembly can be modularized and adapted to other metal fuel tanks.
3) This technical scheme designs the support frame for multi-functional part, and when connecting other parts, self possesses the function that the frock presss from both sides tight location and wave breaker, has promoted the position accuracy of built-in, has reduced the noise that the fuel rocked, has promoted the ability that the fuel cell bore inside and outside pressure simultaneously, has reduced the deformation volume of fuel cell under pressure.
4) According to the technical scheme, the upper shell and the lower shell can be connected up and down in the cavity, so that the capacity of bearing internal and external pressure of the metal fuel tank is further improved, and the deformation of the metal fuel tank under the pressure is controlled.
Drawings
The invention is further described with reference to the following figures and examples, which are provided for reference and illustration only and are not intended to be limiting of the invention.
FIG. 1 is a schematic view of a preferred embodiment of the integrated assembly of the present invention;
FIG. 2 is a schematic view of the preferred embodiment of the integrated assembly of the present invention with built-in fittings attached;
FIG. 3 is a schematic view of preferred embodiments of the integrated components of the present invention when mated together;
FIG. 4 is a schematic view showing the internal structure of a preferred embodiment of the metal fuel tank according to the present invention;
in the figure: 1. the integrated assembly comprises an integrated assembly, 11 parts of a connecting platform, 12 parts of a supporting plate, 12a parts of a support, 12b parts of jacks, 12c parts of through holes, 12d parts of reinforcing ribs, 12e parts of slots, 12f parts of non-fully-closed holes, 12g parts of positioning holes, 13 parts of inserting platforms, 13a parts of inserting structures, 2 parts of an upper shell, 3 parts of a lower shell, 4 parts of a metal fuel tank, 5 parts of valves, 6 parts of pipelines and 7 parts of pipe clamps.
Detailed Description
[ example 1 ]
As shown in fig. 1 and 2, the built-in integrated module for a metal fuel tank and the metal fuel tank include: the integrated assembly 1 is a thin plate structure, the thin plate structure comprises three parts, namely a connecting platform 11, a supporting plate 12 and an inserting platform 13, the connecting platform 11 is used for being connected with a shell of the metal fuel tank 4, a support 12a is arranged on the supporting plate 12 and used for being connected with a valve 5, an inserting hole 12b is arranged on the supporting plate 12 and used for being connected with a pipeline 6, an inserting structure 13a is arranged on the inserting platform 13 and used for inserting the integrated assemblies 1 into each other, the integrated assemblies 1 are connected with required built-in parts in advance and then are integrally connected into the metal fuel tank 4.
The metal fuel tank 4 may contain a single integrated module 1 or a plurality of integrated modules 1, which are plugged into one another.
[ example 2 ]
As shown in fig. 1 and 4, the connection platforms 11 are arranged in multiple directions of the integrated component 1, so that the integrated component 1 and the upper shell 2 or the lower shell 3 of the metal fuel tank 4 are fixedly connected in at least more than two directions, and the integrated component 1 is fixedly connected in the metal fuel tank 4.
[ example 3 ]
As shown in fig. 1, the ends of the connection platform 11 are designed to be semicircular or arc-shaped and spaced apart by a specific distance, so as to position the connection point with the metal fuel tank 4. When the integrated assembly is connected with the shell, the position of the semicircular or arc-shaped circle center can be directly selected for connection.
[ example 4 ]
As shown in fig. 1, the connecting platform 11 and the supporting plate 12 are made of the same material, such as stainless steel, and may be integrally formed by stamping, thereby eliminating the fixing structure of the connecting platform 11 and the supporting plate 12.
[ example 5 ]
As shown in fig. 1, the bracket 12a of the support plate 12 is provided with a through groove structure parallel to the horizontal plane, so as to be suitable for the existing valve 5 connection structure and horizontally fix the valve 5.
[ example 6 ]
As shown in fig. 1, the insertion holes 12b arranged on the supporting plate 12 have different apertures, which are suitable for assembling the pipe clamps 7 for fixing different pipes 6, or the non-fully-enclosed holes 12f arranged on the edge of the supporting plate 12 have internal dimensions matched with the diameters of the pipes 6, so as to realize direct assembly and connection of the pipes 6.
[ example 7 ]
As shown in fig. 1, the support plate 12 is provided with an oval positioning hole 12g corresponding to the remaining circular holes, and can be used for accurately clamping and positioning the tool.
[ example 8 ]
As shown in fig. 1, the support plate 12 is provided with a through hole 12c having a diameter of 10mm to buffer the impact energy of fuel during shaking, thereby reducing the fuel shaking noise, achieving the function of a breakwater, and reducing the weight of the support plate.
[ example 9 ]
As shown in fig. 1, the support plate 12 is provided with ribs 12d to increase the rigidity of the integrated assembly 1 and improve the deformation resistance of the metal fuel tank 4.
[ example 10 ]
The supporting plate 12 is provided with at least one group of slots 12e which can be combined with the inserting platform 13 of another integrated component 1 in a mutually crossed manner, so that the inserting of more than two integrated components 1 is realized, the center distance between the integrated components 1 is shortened, and the drawing force between the integrated components 1 is improved.
[ example 11 ]
The inserting platform 13 and the supporting plate 12 are made of the same material, such as stainless steel, and can be integrally formed in a punching mode. The connection structure between the docking platform 13 and the support plate 12 is eliminated, and further, the embodiment 4 and the embodiment 10 can be combined.
[ example 12 ]
The plug-in structure 13a arranged on the plug-in platform 13 is a punching hole flanging, and a material in the hole can be flanged into a side-standing flange in one or less processes to realize a reliable plug-in structure.
[ example 13 ]
The splicing platform 13 is parallel to the horizontal plane, when the upper shell 2 and the lower shell 3 are respectively connected with the integrated assemblies 1 which can be spliced with each other, the upper shell 2 and the lower shell 3 are connected up and down in the cavity, the capacity of bearing the internal pressure and the external pressure of the cavity of the metal fuel tank 4 is improved, and the stress deformation quantity of the cavity part is reduced.
The specific process steps are as follows: when the upper shell 2 and the lower shell 3 need to be connected up and down in the cavity, two or more than two integrated components 1 are used, firstly, the parts such as a valve 5, a pipeline 6, a pipe clamp 7 and the like are connected to different or same integrated components 1 in advance according to the positions of the parts in the cavity, at least one integrated component 1 needs to be connected to different shells of the metal fuel tank 4, a tool uses a through hole 12c on the integrated component 1 to clamp and position the integrated component 1 and places the integrated component at the correct position in the upper shell 2 or the lower shell 3, the integrated component 1 is respectively connected with the upper shell 2 or the lower shell 3 of the metal fuel tank 4, the upper shell 2 and the lower shell 3 are combined in advance but staggered in the inserting direction of the integrated component 1, then the two shells are overlapped along the inserting direction of the integrated component 1, pressure is applied to ensure that the built-in integrated components 1 are inserted in place with each other, the pressure is then released and finally the upper and lower shells 2, 3 are welded together.
The present invention can also combine two or more selected technical features from the above embodiments 2-12 with embodiment 1 or embodiment 13 to form a new implementation.
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention. In addition to the above embodiments, the present invention may have other embodiments. All technical solutions formed by adopting equivalent substitutions or equivalent transformations fall within the protection scope of the claims of the present invention.
Claims (14)
1. A built-in integrated component for a metal fuel tank and a metal fuel tank comprising: the integrated assembly is of a thin plate structure, the thin plate structure comprises three parts, namely a connecting platform, a supporting plate and an inserting platform, the connecting platform is used for being connected with a shell of the metal fuel tank, a support is arranged on the supporting plate and used for connecting a valve, inserting holes are arranged in the supporting plate and used for connecting pipe clamps of a fixed pipeline, an inserting structure is arranged on the inserting platform and used for inserting the integrated assemblies mutually, the integrated assemblies are connected with required built-in parts in advance, and then the integrated assemblies are integrally connected in the metal fuel tank.
2. The integrated module and metal fuel tank as recited in claim 1, wherein said attachment platform is disposed in a plurality of orientations of said integrated module.
3. The integrated module and the metal fuel tank as claimed in claim 1, wherein the ends of the connecting platform are formed in a semicircular shape or an arc shape and spaced apart by a predetermined distance.
4. The integrated component for a metal fuel tank and the metal fuel tank as claimed in claim 1, wherein the connection platform and the support plate are made of the same material.
5. The integrated module built-in for metal fuel tank and metal fuel tank as claimed in claim 1, wherein said support plate arrangement bracket is provided with a through groove structure parallel to a horizontal plane.
6. The integrated module and the metal fuel tank as recited in claim 1, wherein the insertion holes of the supporting plate are different in diameter or are not completely closed holes disposed at the edge of the supporting plate.
7. The integrated module and metal fuel tank as claimed in claim 1, wherein the support plate is provided with oval positioning holes.
8. The integrated module and metal fuel tank as claimed in claim 1, wherein the support plate is formed with a through hole.
9. The integrated module and the metal fuel tank as recited in claim 1, wherein the support plate is provided with a ring-shaped reinforcing rib.
10. The integrated assembly and metal fuel tank as claimed in claim 1, wherein the support plate is configured with at least one set of slots.
11. The integrated component for a metal fuel tank and the metal fuel tank as claimed in claim 1, wherein the plug platform and the supporting plate are made of the same material.
12. The integrated module and metal fuel tank of claim 1 wherein the plug structure of the plug platform arrangement is a stamped and broached hole.
13. The integrated module and metal fuel tank as in claim 1, wherein said docking platform is parallel to a horizontal plane.
14. A metal fuel tank, comprising a built-in integrated assembly for a metal fuel tank as claimed in any one of claims 1 to 13, wherein the connection platform on the integrated assembly is welded to the inner wall of the metal fuel tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010188201.4A CN111137127A (en) | 2020-03-17 | 2020-03-17 | Built-in integrated assembly for metal fuel tank and metal fuel tank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010188201.4A CN111137127A (en) | 2020-03-17 | 2020-03-17 | Built-in integrated assembly for metal fuel tank and metal fuel tank |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111137127A true CN111137127A (en) | 2020-05-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010188201.4A Pending CN111137127A (en) | 2020-03-17 | 2020-03-17 | Built-in integrated assembly for metal fuel tank and metal fuel tank |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111137127A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107148364A (en) * | 2014-10-30 | 2017-09-08 | 大众汽车有限公司 | Fuel tank for motor vehicle |
| CN207161229U (en) * | 2017-09-23 | 2018-03-30 | 苏州恩都法汽车系统有限公司 | Suitable for the integrated form double check valve device of vehicle fuel oil evaporation system |
| CN208168955U (en) * | 2018-04-09 | 2018-11-30 | 东风汽车股份有限公司 | Plastic fuel tank of automobile integrated urea liquid supply system |
| DE102017213517A1 (en) * | 2017-08-03 | 2019-02-07 | Bayerische Motoren Werke Aktiengesellschaft | Fuel tank for a motor vehicle |
| CN212242955U (en) * | 2020-03-17 | 2020-12-29 | 顾峰 | Built-in integrated assembly for metal fuel tank and metal fuel tank |
-
2020
- 2020-03-17 CN CN202010188201.4A patent/CN111137127A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107148364A (en) * | 2014-10-30 | 2017-09-08 | 大众汽车有限公司 | Fuel tank for motor vehicle |
| DE102017213517A1 (en) * | 2017-08-03 | 2019-02-07 | Bayerische Motoren Werke Aktiengesellschaft | Fuel tank for a motor vehicle |
| CN207161229U (en) * | 2017-09-23 | 2018-03-30 | 苏州恩都法汽车系统有限公司 | Suitable for the integrated form double check valve device of vehicle fuel oil evaporation system |
| CN208168955U (en) * | 2018-04-09 | 2018-11-30 | 东风汽车股份有限公司 | Plastic fuel tank of automobile integrated urea liquid supply system |
| CN212242955U (en) * | 2020-03-17 | 2020-12-29 | 顾峰 | Built-in integrated assembly for metal fuel tank and metal fuel tank |
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Application publication date: 20200512 |
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